Question

How to get the imaginary part of a complex number in C

Answer 1

#include <stdio.h>
#include <complex.h>

int main(void)
{
    double complex z = 1.0 + 2.0 * I;
    
    double imaginary = cimag(z);
    
    printf("%lf", imaginary);
}





/*
run:

2.000000

*/

 

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Answer 2

#include <stdio.h>
#include <complex.h>

int main(void)
{
    double complex z = 1.0 - 2.0 * I;
    
    float imaginary = cimagf(z);
    
    printf("%f", imaginary);
}





/*
run:

-2.000000

*/

 

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Answer 3

#include <stdio.h>
#include <complex.h>

int main(void)
{
    double complex z = 2.0 + 3.0 * I;
    
    long double imaginary = cimagl(z);
    
    printf("%Lf", imaginary);
}





/*
run:

3.000000

*/

 

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